Updates / Progress

Multi-threading performance

• Bartosz Sobol (Jagiellonian University)

How do we enable multi-threading in the online binary and does it perform as expected?

Comparison of ROOT and BOOST streamers

• Jan de Cuveland (Frankfurt Institute for Advanced Studies (FIAS))
• Dirk Hutter (Frankfurt Institute for Advanced Studies (FIAS))

We avoided using the ROOT data model and its streamer in the online binary for performance reasons. This decision makes the online-offline integration more difficult. It was not based on an actual performance comparison. Such a comparison was recently performed in a thesis at FIAS. We should review and digest the results. N.b.: The topic will probably become obsolete with the introduction of the new ROOT data model (RNTuple). Nevertheless, we should at least have a look at the results.

Convention: Header names and inclusion

• Volker Friese (GSI Helmholtzzentrum für Schwerionenforschung GmbH(GSI))
• Pierre-Alain Loizeau (GSI Helmholtzzentrum für Schwerionenforschung GmbH(GSI))

In the algo library, we use non-unique class and header names, e.g. cbm::algo::sts::hit and cbm::algo::trd::hit. Consequently, the inclusion of header files must use relative paths. This leads to problems with using these classes offline in ROOT, see https://redmine.cbm.gsi.de/issues/3577. We shall discuss and implement a clear directive on how to name header files and how to properly include them.

Other business